<html>
    <head>
        <title>Please Sign In</title>
    </head>
    <body>
        {% if message %}
        <p style="color:red;">{{message}}</p>
        {% endif %}
        <form action="/signin" method="post">
            <legend>Please sign in:</legend>
            <p><input name="username" placeholder="Username" type="text" value="{{ username }}"/></p>
            <p><input name="password" placeholder="Password" type="password"/></p>
            <p><button type="submit">Sign In</button></p>
        </form>
    </body>
</html>